Folding door.



` E. H. MCCLOUD.

mmm@ nona. APPLlCATiON FILED APR. I5 i914.

Patented Spt.

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FOLDING DOOR.

APPLICATION'HLED Win15` rslq.

latentedSept. 17,191@

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`FOLDING DOOR.

APPLICATION FILED APR. l5. 19.14.

Patented Sept. 1T, 1918.

@Vi tmeoo UNITED STATES PATENT OFFICE.

EDWARD H. MUCLOUD, OF COLUMBUS, OHIO, ASSIGNOR T0 THE KINNEAR MA'NUFAC# TUBING COMPANY, OF COLUMBUS, OHIO, A CORPORATION OF WEST VIRGINIA.

FOLDING DOOR. i

To. aZZ `whom t may concer/n.'

` Be it known that I, Enwaiui H.' MoCLoUo, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful In'iprovement in Folding Doors, of which the following is a specification.

This invention relatesl to that kind of folding door wliichis divided horizontally into sections the object being to simplify their construction and promote their ease of operation and increase their eiciency.

The invention. is embodied in the construc tion herein shown. and described and then pointed out in the claims.

In the accompanying drawings forming part hereof-` Figure 1 is a front elevation of one forni of structure containing the invention as viewedfroin the interior of tlie'building.

Fig. 2 is an edge elevation of the saine showing in section the wall in which the vdoor is mounted.

Fig. 3 isa vertical section on the -line Fig. 1,` and depicting in broken lines an in,v

terinediate and the fully raised or open position of the door.I

Fig. 4 1s a 'sectional detail on a larger scale showing how the door breaks when the lower section is'raise'd.

Figs. 5, 6 and 7 illustrate sections and a front view of a. coupling and hinging mein-` ber employed in the construction. l Fig. 8 is a 4detailV in horizontal section on the line y--g/ at Fig. 3 looking down.

Fig.' 9 is a similar view on'the line z-z Fig. 3 looking in the saine direction.

Fig. 10isa vertical section like that of Fig. .of the door-sl'iowing in conneetioln. ,therewith a plotting of the curve described in operation by the upper edgeV of the lower section. 1

Fig. 11 is a front elevation of a modification. t

Fig. 12 is an edge elevation of the same. showing in section the wall on'which the door is mounted.

`Fig.'13 is avertiml section-on the line i `rwww Fig. 11 ofthe doorshowing in broken lines an intern'iediate and the fully raised or open positions of the door. v Fig. 14, is'a simi-lar section showing in con neetion therewith a plotting ofthe curve dcscribed inoperation by Vthe upper edge of the lower section.

Specication of Letters lratent. i Patented Sept, 17, `191 `8, Application led April 15, 1914. Serial No. 831,945. l

Referring more particul-.irly to Figs.. l to l0 the character 20 designates the lower door section and 21 the upper door section. The lower door section is shown Vas iliade about twice the height of the upper section. The lower door section is provided at each of its lower coi-11ers with a large anti friction roller 22 that travels on one web of an angli.l bar 23 that is seiifiired vertically to the adjacent face of a wall 2l that has the door vinclined groove 28 and oneach side of the lower door section is a pin that projects into said groove when the door is lowered. Said pin can be provided with a small antifriction roller. The function of the groove 28 and pin :Z9 is to projectthe upper end of the lower door section inward or away from the door opening when that section is raised in the operation of opening the door. This pin 29 can enter a `keeper 29"'when. the door is lowered to further lock the door' againstthe opening. n

The upper door section is hinged at 30 to" the building near lthe ripper edge of the doorway. Hinged to a bracket. 31 on each! lower corner ot' the upper section a hinged arin having jourualed in its outer enda roller 33 that normally bears upon the inner' face of the traine of the lower door section to cause the lower section to draw out the lower portion of the upper door section when the upper portion ot the lower section 1s thrown out b v thegrooves 28a. bracket 31 is provided with two separated arm 32; and on the outer side of the lower v door section near the middle horizontal. line l thereof is a 'hook 2Min vertical aflinement with each of said bridging hinge pins 3:2"` so that when the lower door section is raised j said hooks 3% catch said bridging pins and ,hingedlyi connect the sections.

34 has a lateral extension 34 and the bracket 31 has a. vmatching extension 43l" thatgflaps i over the extension 34 when the doei' is broken or iexed and the sections stand at considerable angles to each othei so that these hinging members and the door s ections are locked from accidental separatlon or undue movement with reference to each other in the further operation.

The means shown for raising the lower section (and consequently the u pper section) consists ot' a pair of chains 35 and 35 connected with the lower corners of the lower door section and ruiming over su1table pulleys to a counter-balance weight 36 that slides in a box vertically secured at one side of the doorway` Sin-all doors might be operated by the application of the hands to the lower door section but with large or heavy doors si'litable reducing gearing operating sprocket or pocket wheels for moving appropriate chains 35 and 35 as suggested in Figs. 1 and 2 can be enqloyed and said gearing and sprocket or pocket wheels operated by a sprocket wheel 36"* and an endless chain 3T ruiming thereover. Such inealis, however, are. connnon and require no detailed description here.

In thevconstruetion illustrated in Figs. 1 2 and 23 the door, if large, may be raised a part of the way only-as where persons only are to pass under it., but if much head rooni is desired or required as where loaded vehicles are to pass under the door. the sections are fully raised. In Fig.y 3 the door sections are shown by broken lines in the two positions just referred to. In the construction shown in these views the sections when completelyY raised come foldinglv or parallelly together and stand horizontally7 from the wall. ln such horizontal position a support for the outer edge of the projected door may be important. Such a support is shown in Fig. it and' consists of a bracket 38 fastened to the ceiling or beams thereof and having a seat 38 to receive suitable. casters or rollers 39 secured for this purpose to the edge. of the lower door section. As before indicated the path of movement of the upper edge of the door section is illustrated in F ig. 10, said path being indicated b v the heavy black line leading fromthe roller 39.

Referring now to Figs. 11 to 1st inclusive the construction of the door generally is substantially the same as that-first described.

.But the upper door section in the modified construction is provided at its upper edge with brackets 21 extending upward beyond the door .opening each for the reception of the leaf of a hinge. 30 by `means of which the upper section is in operative eltect made 'of practically the same height as the lower section'. iVhen the lower door section of this modified construction is raised unt-il its lower, edge coincides .with the top of the doorway or opening. or in horizontal posi- I imams tion, the upper door section sustains thc outer portion of the lower door section and no additional supporting means such as the bracket 38 is required. A construction like that shown in Fig, 13, however, requires lnore head room for the installation oi the door than a construction like that shown in Fig. 3.,?'111 the construction shown in Fig. 13 the hooks` 34 are shown as placed nearer the upper edge of the lower door section so that the connection between the two seetions is nearer the edge of the lower door section when extended in horizontal position (sce broken lines upper portion of Fig. 13) thereby affording a firmer support t'or the door section when raised to horizontal position. The upper section. of course` braces and amply supports the outer portion of the lower door section in all the substantially elevated positions of that section because of the angular relation ot the upper door section to the lower.

The path of movement of the upper edge of the lower door section in the construction shown in Fig. 13 is illustrated by the heaviY line leading from said section in the plotting shown in connection with Fig.'14.

The forms of the, parts shown can be varied and a part. or parts omitted or'sonle parts can be used in conjunction with other and different part or parts without departing from the gist of the invention as finallv claimed. i

What T claim is:

t 1. A folding door comprising in eombinatioir7 an upper section and a lower door section suitaily mounted to be raised. means on the lower section for hingedly engaging the upper section. the lower door section haviingr a movement independent of the upper door section into and out of hinging engagement, and means on the building independent of the door sections for deliecting the upper portion of the lower section when that section is raised.

2. A folding door comprising in combination an upper section and a lower door seetion suitably 'mounted to be raised, means on the lower section for hingedlyengaging the upper section. the lower door section having a. movement independent of the upper door section into and out of hinging engagement` means on the upper section for holding the lower section toward the upper section when the sections are. not hingedly engaged.

tion an upper section and a lower door section suitably mounted to be raised, mea-ns on the lower section for hingedly engaging the upper section, the lower door section having a. movei'nent 'independent of the upper door section into and out of hinging engagement. means on` the upper section for holding;r the lower section toward the upper section when the sections are not hingedly 12o 3. A folding door comprising in combina` engaged, and means inthe doorway for deflecting the upper portion of the lower section when that section is raised.

4; A folding door Acomprising in combination an upper section and a lower door section suitably mounted to be raised, means for hin ing the upper door section at its upper e( ge, the lower door section having a movement independentA of the upper door section into and out of hinging engagement, means for temporarily hingedly connecting the upper section to the lower section and means whereby both sections are deflected at said connection when the lower section is raised.

A folding door comprising Vin combina tion, an up )er section and a lower. door section suitabl for hinging the upper door section at its upper edge,` means for temporarily hingedly connecting the upper section to 4the ower section, the lower door section having av movement independent of the upper section into and out of hinging engagement, means whereby both sections are deflected at said connection when the lower section is raised and means to prevent the separation of the last named hinging members during the door raising operation,

6. A folding door comprising in combinai tion, an u per section and a lower door section suita ly mounted to be raised, means onthe upper section for engaging and gu1ding the lower door section, means on the two sections for temporarily hinging them together when the lower section is raised, means for automatically deflecting the sections where they are hinged together and means for securing the sections against the doorway when the door is closed.

7. A folding door comprising in combination, an u ersectionpand a lower door section suita y mounted' to be raised, means on the sections for temporarily hinging them together when the lower section is raised,'said means including a hook on one member and a pin to be engaged by the hook Von the other, means for guiding the lower section with refereneeto the upper section and means for deflecting the two sections at the line where hinged together.

8. A folding door comprising in combination, a hinged upper section and alower Vdoor section slidable independently of the `upper door section, pivoted means on the upper door section for connectingthe lower y mounted to be ralsed, meansdoor section t0 it and guiding the same in its upward movement, means on the doorframe independent of the door sections for deflecting the lower section when that section is raised and hinging means for connecting the sections after the lower section has been partially raised.

9. folding door comprising in combination, a hinge upper door section, a sliding lower` door section, means for temporarily hingedly connecting the two sections when the lower door section is raised, meansfor causing the deflection of the two sections when the lower section is. raised, a channel on the lowerportion of the door frame .and` means on the lower door section for engaging said channel to hold that section againstmovement from the doorway when the lower door section is lowered.

10. In combination with a door frame, a door having a section ada ted to be swung open and closed, a secon section adapted' to slide upon and swing relative to the first sec-tion, means forming a part of the ,first section for guiding one end of the second section as it slides upon the first section, and stationary means for guiding the opposite end of the second section whereby the second section is adapted to act .as a brace to hold the first section open.

l 11. In combination with spaced guides on opposite sides 0f an opening, of a closure having a section adapted tobe swung open and c osed, a second section adapted to have a sliding and swinging movement relative to the first section, means onfthe first section for guiding;r one endrof the second section in its sliding movement and for causing the first section to be swung open. and braced by the second section, the opposite end of the second section being arranged to coperate with said spaced guides.-

12. \The combination with two .door sections, one hinged to have a swinging motion and meansl for guiding the other section for y sliding into lapped relation to the first named section and into a tempore pivotal engagement therewith, whereby ,othl the sections may be relatively swungv d deflected so that the second section shall act to brace the first.

EDWARD H.y MCcLoUD. Witnesses WILLIAM M. BRUNs'r, ANNA TERESA KING. 

